Patent GB-890933-A (GB)
Title: Method and apparatus for handling yarns
IPC: D02H3/00
Filed: 1960-05-31
Abstract: 890,933. Plying yarns; beaming. UNITED STATES RUBBER CO. May 31, 1960 [July 17, 1959], No. 19179/60. Classes 120(2), 120(3) and 142(1) A method of producing a number of plied yarns simultaneously in which each plied yarn is produced by a method in which a first yarn is advanced at predetermined speed past a supply of a second yarn to a plying point, and at the same time the second yarn is advanced from its supply at the same speed to the plying point, comprises the steps of drawing a number of yarns simultaneously from a common supply and advancing each such yarn to its own plying station where it is plied by said method with a second yarn from a supply disposed at the plying station and advancing each of the plied yarns so produced to a common take-up where they are taken up simultaneously. A number of first yarns 19 are drawn from a multiple end beam 43, Fig. 1, through eye-boards 50, 51 to an eye board 52, Fig. 2, on a frame carrying a corresponding number of packages of second yarns, e.g. 30 each arranged in containers 31 held stationary by magnets 34, 35. Each yarn 19 after a few turns between a feed roll 23 and an idler 25 passes via a presser-roll 26 to pigtails 16, 14, 15, the latter of which are carried by a rod 13 extending above all the plying stations; it then passes over a flyer 27 and a disc 28 carried by a rotating spindle 17, and thence to the plying point inside the spindle. The second yarn 30 is drawn around the outside of its package 29 via a tensioner 36 to rolls 37, 38, 39 and thence through the spindle to the ply point. Each plied yarn 40 is drawn off over the rolls 23 via guide 42 to boards 52, 55, Figs. 1, 3 where all the yarns so produced are arranged as a warplike sheet across the width of the machine, and deflected over a rod 74 to be taken up on a beam 75, on which they are traversed over a short distance by an adjustable lazy-tongs arrangement 58. This consists of pivotally-connected eyeboards 59 and links 60, the end-most pivot-pins 62 being carried by nuts on screwed portions of a rod 64 rotatable by a knob 65 to expand or contract the lazy-tongs. The rod 64 is secured to plates 63 on which the tongs rests, and slidable in end-frames 66; when the tongs has been adjusted as required, the plates are locked in position by a clamp 67 and set-screw 68. For the traverse, a follower adjustable by a knob 73 on the clamp co-operates with a cam 69 on a speed-reducer 70 driven from the shaft of a drum 72 which rotates the beam 75. The latter has a tube 77 on which the plied yarn is wound on flanges 76, and is donned and doffed by the pistons of air-cylinders 89 which can be extended to engage the axle of an empty beam 75<SP>1</SP> and can then be retracted to pull the beam up a plate 78 to a platform 79, the pistons remaining in engagement with the beam so that the tube 77 yieldingly engages driving drum 72. When a new beam is being put into position, a roller 94 depending by links from a roller 95 is moved by a rotating handle 99 to engage an aperture 100 so that the sheet of plied yarns can be snubbed around roller 95. Specifications 659,473 and 860,422 are referred to.